I personally like 6700k bulbs over a planted tank. I would guess that these bulbs would work fine for you. --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.463 / Virus Database: 262 - Release Date: 3/17/2003 --- StripMime Report -- processed MIME parts --- multipart/mixed ---